Threat Description

Bomber

Details

Summary

Bomber is a complicated virus, which is not known to be in the wild. It stays resident
in memory and infects COM files when they are executed.

Bomber contains the following unencrypted text strings:

COMMANDER BOMBER WAS HERE [DAME] [DAME]

Bomber inserts its code in the middle of the host file and builds a complicated series
of branching commands to transfer the flow of the program to the virus code, which
is unencrypted. The detection of such virus would force some scanners to scan the
whole file from the beginning to the end - which would be enough to make them unusably
slow.

Bomber contains routines which generate random code, which are inserted into random
positions in the host file. These fragments are linked by a series of complicated
branching commands. Almost all legal 80x86 instructions are used in these code fragments,
making Bomber a difficult virus to detect efficiently.

One_Half virus uses a similar infection method.

Removal

Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Description Details: Mikko Hypponen, F-Secure

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